NAME

       uuidd - UUID generation daemon

SYNOPSIS

       uuidd [options]

DESCRIPTION

       The  uuidd  daemon  is  used  by  the  UUID  library  to generate universally unique identifiers (UUIDs),
       especially time-based UUIDs, in a secure and guaranteed-unique fashion, even in the face of large numbers
       of threads running on different CPUs trying to grab UUIDs.

OPTIONS

       -d, --debug
              Run uuidd in debugging mode.  This prevents uuidd from running as a daemon.

       -F, --no-fork
              Do not daemonize using a double-fork.

       -k, --kill
              If currently a uuidd daemon is running, kill it.

       -n, --uuids number
              When issuing a test request to a running uuidd, request a bulk response of number UUIDs.

       -P, --no-pid
              Do not create a pid file.

       -p, --pid path
              Specify the pathname where the pid file should be written.  By default, the pid file is written to
              /run/uuidd/uuidd.pid.

       -q, --quiet
              Suppress some failure messages.

       -r, --random
              Test uuidd by trying to connect to a running uuidd daemon and request it to return a  random-based
              UUID.

       -S, --socket-activation
              Do  not create a socket but instead expect it to be provided by the calling process.  This implies
              --no-fork and --no-pid.  This option is intended to be used only with systemd(1).  It needs to  be
              enabled with a configure option.

       -s, --socket path
              Make  uuidd  use  this  pathname  for  the  unix-domain  socket.  By default, the pathname used is
              /run/uuidd/request.  This option is primarily for debugging purposes, since the pathname is  hard-
              coded in the libuuid library.

       -T, --timeout number
              Make uuidd exit after number seconds of inactivity.

       -t, --time
              Test  uuidd  by  trying to connect to a running uuidd daemon and request it to return a time-based
              UUID.

       -V, --version
              Output version information and exit.

       -h, --help
              Display help screen and exit.

EXAMPLE

       Start up a daemon, print 42 random keys, and then stop the daemon:

              uuidd -p /tmp/uuidd.pid -s /tmp/uuidd.socket
              uuidd -d -r -n 42 -s /tmp/uuidd.socket
              uuidd -d -k -s /tmp/uuidd.socket

AUTHOR

       The uuidd daemon was written by Theodore Ts'o <tytso@mit.edu>.

SEE ALSO

       uuid(3), uuidgen(1)

AVAILABILITY

       The uuidd daemon is part of the util-linux package  and  is  available  from  the  Linux  Kernel  Archive
       ⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩.